from SQLRelay import PySQLRClient

con=PySQLRClient.sqlrconnection('sqlrserver',9000,'/tmp/test.socket','user','password',0,1)
cur=PySQLRClient.sqlrcursor(con)

cur.prepareQuery('select * from mytable \$(whereclause)')
cur.substitution('whereclause','where stringcol=:stringval and integercol>:integerval and floatcol>floatval')
cur.inputBind('stringval','true')
cur.inputBind('integerval',10)
cur.inputBind('floatval',1.1,2,1)
cur.executeQuery()

... process the result set ...
